Patent US3218868A successfully refreshed from Google Patents.
US3218868A
Expired / Lapsed
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Fluid sampling
Assignee: Sinclair Research Inc
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Filing: 1962-08-08
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Granted: 1965-11-23
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Expires: 1982-08-08
Abstract
No abstract record available.
Inventors
- 👤 Gill Vernon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:23
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A FLUID SAMPLE TRAP COMPRISING A BODY HAVING A PASSAGE THEREIN, A FLUID INLET AND A FLUID OUTLET SPACED APART IN SAID BODY AND COMMUNICATING WITH SAID PASSAGE, A PISTON SLIDABLY MOUNTED IN THE PASSAGE DIVIDING THE PASSAGE INTO A FLUID-RECEIVING CHAMBER AND A SPRING CHAMBER, SAID SPRING CHAMBER BEING PROVIDED WITH A SPRING, BIASING SAID PISTON TOWARDS SAID INLET AND INTO A POSITION OF SHUT-OFF OF SAID OUTLET WITH RESPECT TO SAID FLUID-RECEIVING CHAMBER, SAID PISTON BEING SLIDABLY MOVED IN THE PASSAGE UNDER THE PRESSURE OF FLUID FROM SAID INLET TO
Claim 2
Dependent Claim
92 words
A FLUID SAMPLE TRAP COMPRISING A BODY HAVING A PASSAGE THEREIN, A FLUID INLET AND A FLUID OUTLET SPACED APART IN SAID BODY AND COMMUNICATING WITH SAID PASSAGE, A PISTON SLIDABLY MOUNTED IN THE PASSAGE DIVIDING THE PASSAGE INTO A FLUID-RECEIVING CHAMBER AND A SPRING CHAMBER, SAID SPRING CHAMBER BEING PROVIDED WITH A SPRING, BIASING SAID PISTON TOWARDS SAID INLET AND INTO A POSITION OF SHUT-OFF OF SAID OUTLET WITH RESPECT TO SAID FLUID-RECEIVING CHAMBER, SAID PISTON BEING SLIDABLY MOVED IN THE PASSAGE UNDER THE PRESSURE OF FLUID FROM SAID INLET TO
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |